s3: smbd: Add fifo test for the DISABLE_OPATH case.

Currently we hang when trying to list a directory
containing a fifo when configured with DISABLE_OPATH.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=14816

Signed-off-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ralph Boehme <slow@samba.org>

selftest/skip.opath-required

@@ -7,3 +7,7 @@
 # These fail because become_root() doesn't work in make test
 ^samba3.blackbox.dropbox.*
 ^samba3.raw.samba3hide.*
+# This fails because of BUG: https://bugzilla.samba.org/show_bug.cgi?id=14816
+# which causes the server to hang when trying to open a pathref fifo without O_PATH.
+# We need to add O_NONBLOCK to make this work.
+^samba3.blackbox.fifo

source3/script/tests/test_fifo.sh

@@ -0,0 +1,83 @@
+#!/bin/sh
+#
+# Check smbclient can list a directory containing a fifo.
+#
+
+if [ $# -lt 7 ]; then
+cat <<EOF
+Usage: $0 SERVER DOMAIN USERNAME PASSWORD PREFIX TARGET_ENV SMBCLIENT
+EOF
+exit 1;
+fi
+
+SERVER=${1}
+DOMAIN=${2}
+USERNAME=${3}
+PASSWORD=${4}
+PREFIX=${5}
+TARGET_ENV=${6}
+SMBCLIENT=${7}
+shift 7
+SMBCLIENT="$VALGRIND ${SMBCLIENT}"
+ADDARGS="$@"
+
+incdir=`dirname $0`/../../../testprogs/blackbox
+. $incdir/subunit.sh
+
+failed=0
+
+# Test that listing a share with a directory containing a fifo succeeds.
+#
+# BUG: https://bugzilla.samba.org/show_bug.cgi?id=14816
+#
+test_fifo()
+{
+    local fifo_dir_path="$PREFIX/$TARGET_ENV/share/fifodir"
+    local fifo_path="$fifo_dir_path/fifo_name"
+
+    local tmpfile=$PREFIX/smbclient.in.$$
+
+    cat > $tmpfile <<EOF
+cd fifodir
+ls
+quit
+EOF
+
+    # Create fifo directory.
+    mkdir -p $fifo_dir_path
+    # Create fifo underneath.
+    mkfifo $fifo_path
+
+    local cmd='CLI_FORCE_INTERACTIVE=yes $SMBCLIENT //$SERVER/$1 -U$USERNAME%$PASSWORD $ADDARGS < $tmpfile 2>&1'
+    eval echo "$cmd"
+    out=`eval $cmd`
+    ret=$?
+
+    # Remove fifo and containing dir.
+    rm $fifo_path
+    rmdir $fifo_dir_path
+    rm -f $tmpfile
+
+    # Check for smbclient error.
+    if [ $ret != 0 ] ; then
+        echo "Failed accessing share containing dir with fifo $ret"
+        echo "$out"
+        return 1
+    fi
+
+    # Check for smbclient timeout (server hung).
+    echo "$out" | grep 'NT_STATUS_'
+    ret=$?
+    if [ $ret -eq 0 ] ; then
+       # Client was disconnected as server timed out.
+       echo "$out"
+       return 1
+    fi
+
+    return 0
+}
+
+testit "list directory containing a fifo" \
+   test_fifo tmp || failed=`expr $failed + 1`
+
+exit $failed

source3/selftest/tests.py

@@ -567,6 +567,9 @@ for env in ["fileserver"]:
                    '-u', '$USERNAME', '-p', '$PASSWORD', '-l', '$LOCAL_PATH/tarmode2',
                    '-d', 'smbclient_tar.SMB3', '-b', smbclient3,
                    '--subunit', '--', configuration, '-mSMB3'])
+    plantestsuite("samba3.blackbox.fifo", env,
+                  [os.path.join(samba3srcdir, "script/tests/test_fifo.sh"),
+                  '$SERVER', '$DOMAIN', 'gooduser', '$PASSWORD', '$PREFIX', env, smbclient3])
 
 for env in ["fileserver:local"]:
     plantestsuite("samba3.blackbox.net_usershare", env, [os.path.join(samba3srcdir, "script/tests/test_net_usershare.sh"), '$SERVER', '$SERVER_IP', '$USERNAME', '$PASSWORD', smbclient3])